一道GMAT的CR题,求高人讲解,需要详细推理过程

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查看11 | 回复4 | 2011-3-16 23:00:53 | 显示全部楼层 |阅读模式
The program to control the entry of illegal drugs into the country was a failure in 1987. If the program had been successful, the wholesale price of most illegal drugs would not have dropped substantially in 1987.
The argument in the passage depends on which of the following assumptions?
(A) The supply of illegal drugs dropped substantially in 1987.
(B) The price paid for most illegal drugs by the average consumer did not drop substantially in 1987.
(C) Domestic production of illegal drugs increased at a higher rate than did the entry of such drugs into the country.
(D) The wholesale price of a few illegal drugs increased substantial in 1987.
(E) A drop in demand for most illegal drugs in 1987 was not the sole cause of the drop in their wholesale price.
the answer is (E)

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千问 | 2011-3-16 23:00:53 | 显示全部楼层
首先前四个都不对,所以选E.题目意思是,1987年禁毒不成功,因为如果禁毒成功了,国内毒品价格就不会明显下降。毒品价格下降由两个原因引起:一可能是要的人少了,就是E里面说的;二可能是毒品多了,供大于求,所以便宜。而题目中上来就暗示,禁毒失败导致毒品价格下降,所以其实就是假设了第二种可能是真正导致毒品价格下降的原因,而不是第一种,也就是说a drop in demand for most illegal drugs不是导致毒品价格下降的原因。因此选E. 这里我说的禁毒意思就是禁止毒品入境的意思,是针对毒品渠道的,即题目所说的The program to control the entry of illegal drugs into the c
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千问 | 2011-3-16 23:00:53 | 显示全部楼层
题目的假设:1987年,若非法药物入境被有效控制(即控制计划成功),则其批发价不应该持续下降。题目的现实:1987年的控制计划失败。表面上可以导出:1987年进口的非法药物的批发价格持续下降。但答案中没有。实际上其中隐含的是:控制计划是对批发价(下降)造成影响的因素之一。A.供给持续下降→价格不动或上升,和实际反了。B.1987年平均
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千问 | 2011-3-16 23:00:53 | 显示全部楼层
你们这帮人 翻译它干吗? LZ我来帮你。 depends on assumptions 这种题型 就是补全推理原题的推理: program failure in 1987 如果successful =》price of most illegal drugs不会下降。原题的逻辑是 price of most illegal drugs 绝定因素
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千问 | 2011-3-16 23:00:53 | 显示全部楼层
(E) A drop in demand for most illegal drugs in 1987 was not the sole cause of the drop in their wholesale price.其中“not the sole cause”,不是唯一原因,即同时还有别的原因。 也就是禁毒program失败。。 所以su
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